I got the adhesion promoter and used it primarily on the inside of the CF splitter after cleaning it. I was having most problems with it pulling away from that side vs. the bumper. In fact, when I took one off this time, I'd say 95% of the tape stayed on the bumper and had pulled away from the splitter. I just did one as a 'test' and will be taking it out this weekend to sit in the sun for a couple hours and then take it for an extended interstate ride at 80mph. I'll report back after the test
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